Step |
Hyp |
Ref |
Expression |
1 |
|
upwlksfval.v |
|
2 |
|
upwlksfval.i |
|
3 |
|
df-upwlks |
|
4 |
|
fveq2 |
|
5 |
4 2
|
eqtr4di |
|
6 |
5
|
dmeqd |
|
7 |
|
wrdeq |
|
8 |
6 7
|
syl |
|
9 |
8
|
eleq2d |
|
10 |
|
fveq2 |
|
11 |
10 1
|
eqtr4di |
|
12 |
11
|
feq3d |
|
13 |
5
|
fveq1d |
|
14 |
13
|
eqeq1d |
|
15 |
14
|
ralbidv |
|
16 |
9 12 15
|
3anbi123d |
|
17 |
16
|
opabbidv |
|
18 |
|
elex |
|
19 |
|
3anass |
|
20 |
19
|
opabbii |
|
21 |
2
|
fvexi |
|
22 |
21
|
dmex |
|
23 |
|
wrdexg |
|
24 |
22 23
|
mp1i |
|
25 |
|
ovex |
|
26 |
1
|
fvexi |
|
27 |
26
|
a1i |
|
28 |
|
mapex |
|
29 |
25 27 28
|
sylancr |
|
30 |
|
simpl |
|
31 |
30
|
ss2abi |
|
32 |
31
|
a1i |
|
33 |
29 32
|
ssexd |
|
34 |
24 33
|
opabex3d |
|
35 |
20 34
|
eqeltrid |
|
36 |
3 17 18 35
|
fvmptd3 |
|